In three new portraits released by the royal family to celebrate George's sixth birthday, the prince can be seen wearing an England soccer jersey and having fun while playing in the garden. As the photos were taken by his mother, Duchess Kate, George looks totally at ease.

Here, we take a look at Prince George's birthday portraits through the years and see how they compare.

First Birthday

Prince George's unforgettable first birthday portraits were taken at the Sensational Butterflies exhibition at the Natural History Museum on July 2, 2014.

Prince George at the Sensational Butterflies exhibition at the Natural History Museum on July 2, 2014.

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George was photographed taking some steps on his own in one photo and admiring the exhibit with his parents in the other snaps.

WPA PoolGetty Images

Kate Middleton, Prince George, and Prince William at the Sensational Butterflies exhibition at the Natural History Museum on July 2, 2014.

WPA PoolGetty Images

As George's first birthday portraits were taken during an outing, they have a totally different vibe from his recently released sixth birthday portraits. Instead, they give us a glimpse at the happy family life the Cambridges share.

Second Birthday

When Prince George turned two, the royals released a seriously sweet and super-informal birthday portrait. Being held by his dad, Prince William, George was captured lurching toward the camera, as if he was trying to snatch it from the photographer's hands. It's more than a little adorable.

By releasing a much less formal photo for George's second birthday, the Duke and Duchess of Cambridge shared their son's immense sense of fun with the world, which has been evident ever since.

Third Birthday

Understandably, as a growing toddler, Prince George's third birthday portraits gave fans a real insight into the little royal's personality.

Firstly, George was caught on camera feeding ice cream to a dog, which is exactly how most of us would want to spend our birthdays too.

Prince George feeds ice cream to a dog to celebrate his third birthday in 2016.

Kensington PalaceGetty Images

The prince was also captured playing on a swing in his garden, which is sweetly engraved with his parents' names. Above all, George's third birthday photos showed what a confident young prince he is fast becoming.

Kensington PalaceGetty Images

Kensington PalaceGetty Images

Kensington PalaceGetty Images

Of the day, photographer Matt Porteous said in a statement via Today, "It was a very relaxed and enjoyable atmosphere."

Fourth Birthday

While his third birthday portraits showed Prince George at play, his fourth birthday photo was much more formal.

Taken by royal photographer Chris Jackson, the prince was captured looking smart in a shirt, as he stood in front of a wall. But just as in his previous portraits, the prince's huge grin was immediately evident. Each year, Prince George's sunny disposition shines through.

Prince George's official fourth birthday portrait.

Chris Jackson/Kensington PalaceGetty Images

Fifth Birthday

In a sweet snap taken on the day of brother Prince Louis's christening in 2018, Prince George beamed in his fifth birthday portrait, which was taken by royal photographer Porteous.

Wearing a smart white shirt with blue piping, Prince George looked so grown up as he posed with his hands behind his back. Much like his fourth birthday portrait, George posed for a formal snap to celebrate his fifth birthday, which definitely made the young prince look dignified.

Sixth Birthday

Prince George is all grown up in his sixth birthday portraits, all of which were taken by his mother. In one, George can be seen wearing a smart green polo shirt.

The Duchess of Cambridge

In the two other portraits, George wears an England soccer jersey and looks like he's having so much fun. It's also evident in the snaps that he's already lost some of his baby teeth.

The Duchess of Cambridge

The Duchess of Cambridge

The fact that all three of George's sixth birthday portraits were taken by Kate makes them all the more special. In most of his previous portraits, George posed for an official photographer, meaning that the snaps were slightly more formal. Instead, Kate has managed to capture George at his most relaxed, flashing his cheeky smile and looking so happy he could burst.

As George celebrates his sixth birthday, it's the perfect time to reflect on his portraits through the years. Above all, the little royal seems to be developing his own personality, a love of football, and a sense of style, all of which are heartwarming to see.

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